YOU SAID:

I've just been just been really sad lately.

INTO JAPANESE

私は最近、本当に悲しくなりました。

BACK INTO ENGLISH

I'm really sad recently.

INTO JAPANESE

私は最近とても悲しいです。

BACK INTO ENGLISH

I am very sad recently.

INTO JAPANESE

私は最近とても悲しいです。

BACK INTO ENGLISH

I am very sad recently.